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| Mirrors > Home > MPE Home > Th. List > sltssn | Structured version Visualization version GIF version | ||
| Description: Surreal set less-than of two singletons. (Contributed by Scott Fenton, 17-Mar-2025.) |
| Ref | Expression |
|---|---|
| sltssn.1 | ⊢ (𝜑 → 𝐴 ∈ No ) |
| sltssn.2 | ⊢ (𝜑 → 𝐵 ∈ No ) |
| sltssn.3 | ⊢ (𝜑 → 𝐴 <s 𝐵) |
| Ref | Expression |
|---|---|
| sltssn | ⊢ (𝜑 → {𝐴} <<s {𝐵}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sltssn.3 | . 2 ⊢ (𝜑 → 𝐴 <s 𝐵) | |
| 2 | sltssn.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ No ) | |
| 3 | sltssn.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ No ) | |
| 4 | 2, 3 | sltssnb 27775 | . 2 ⊢ (𝜑 → ({𝐴} <<s {𝐵} ↔ 𝐴 <s 𝐵)) |
| 5 | 1, 4 | mpbird 257 | 1 ⊢ (𝜑 → {𝐴} <<s {𝐵}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 {csn 4568 class class class wbr 5086 No csur 27617 <s clts 27618 <<s cslts 27763 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5231 ax-pr 5370 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 df-xp 5630 df-slts 27764 |
| This theorem is referenced by: cutneg 27822 zcuts 28413 twocut 28429 nohalf 28430 pw2recs 28444 halfcut 28464 addhalfcut 28465 pw2cut2 28468 bdaypw2n0bndlem 28469 bdayfinbndlem1 28473 |
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